168687970 has 16 divisors (see below), whose sum is σ = 331242048. Its totient is φ = 61341040.

The previous prime is 168687949. The next prime is 168687971. The reversal of 168687970 is 79786861.

168687970 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (168687971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766654 + ... + 766873.

It is an arithmetic number, because the mean of its divisors is an integer number (20702628).

Almost surely, 2^168687970 is an apocalyptic number.

168687970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168687970 is a deficient number, since it is larger than the sum of its proper divisors (162554078).

168687970 is a wasteful number, since it uses less digits than its factorization.

168687970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533545.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 168687970 is about 12987.9933015074. The cubic root of 168687970 is about 552.5370067280.

The spelling of 168687970 in words is "one hundred sixty-eight million, six hundred eighty-seven thousand, nine hundred seventy".